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[Discuss-gnuradio] Some doubts in using gr_modtool


From: Manu T S
Subject: [Discuss-gnuradio] Some doubts in using gr_modtool
Date: Sun, 8 Sep 2013 11:30:44 +0530

Given below is the constructor in vector_to_stream block. The block size is passed as a parameter to the constructor.

    vector_to_stream_impl::vector_to_stream_impl(size_t itemsize, size_t nitems_per_block)
      : sync_interpolator ("vector_to_stream",
                  io_signature::make (1, 1, itemsize * nitems_per_block),
                  io_signature::make (1, 1, itemsize),
                  nitems_per_block)
    {
    }

Suppose I don't know the block size before hand, and I want to pass a parameter "x" to toe constructor such that block size can be obtained from x using certain computation (that will be defined inside the constructor). Can I do this? If so how?
 
When I add a new block "encoder", to the module "ldpc", modtool add files "include/ldpc/encoder.h", "lib/encoder_impl.cc", and "lib/encoder_impl.h". And the work function is to be declared and defined in encoder_impl.h and encoder_impl.cc respectively. Consider that I have the function "encode" defined and declared in ldpc.h and ldpc.cc respectively. ldpc.* does not define any signal processing block, so I don't add them using modtool. But they are required as they have the definition for the "encode" function and inside the work function in encoder_impl.cc I just want to call the encode function defined inside this ldpc class.

Am I supposed to put ldpc.h in inlclude/ldpc/ and ldpc.cc in lib/? Or should I put both of them inside lib/ ? Which section of CMakeLists.txt am I supposed to modify?

--
Manu T S

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